JPH06159694A - Warm water room heating system - Google Patents

Abstract

PURPOSE:To effectively detect water pouring malfunction by deciding whether filling of water in a warm water room heater is finished or not from a detected value of a temperature sensor after a predetermined time is elapsed by turning ON a pump and a detected value of the sensor stored in a memory. CONSTITUTION:Heating means 11 such as a heater, etc., and a temperature sensor 12 for detecting a warm water temperature heated by the means 11 are arranged at a return tube 3, and a detected value of the sensor 12 after a predetermined temperature is raised by the means 11 is stored in a memory 24. Whether filling of water in a warm water room heater 1 is finished or not is decided by deciding means 25 from the detected value of the sensor 12 after a predetermined time is elapsed from when a pump 6 is burned ON by opening a heating medium supply valve 9 and the detected value of the sensor 12 stored in the memory 24. Thus, water filling malfunction in the heater 1 due to a trouble, etc., of the valve 9 can be effectively detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has an object to provide a hot water heating system capable of surely determining whether or not water has been injected into the hot water heating system.

[0002]

2. Description of the Related Art Conventionally, as an example of an initial method of injecting circulating water in a hot water heater, there is JP-A-3-233231. In this example, it was judged that the injection of the circulating water was completed when the water level in the tank storing the circulating water continued at a predetermined high water level for a predetermined time (T).

[0003]

However, in the above-mentioned conventional example, when the heat medium supply valve for supplying the hot water to the heating terminal is provided, the heat medium supply valve is closed due to a failure. If the water level in the tank continues to reach a predetermined high water level for a predetermined time (T), it is considered that the water injection in the hot water heating device is completed and the water injection is ended. Therefore, although water was not reliably injected in the circulation path downstream of the heat medium supply valve, it was erroneously determined that water injection was completed.

Further, in the above-mentioned conventional example, since the heating terminal is composed of a thin tube such as a panel heater, the thin tube has a large pipe resistance and dust clogging easily occurs. Therefore, even if the heat medium supply valve is normally opened and the water level in the tank continues to be a predetermined high water level for a predetermined time (T), water filling in the heating terminal and the return pipe is not reliably performed. Despite this, it was erroneously determined that water injection was completed.

Therefore, an object of the present invention is to solve the above problems, that is, to provide a hot water heating system capable of reliably detecting poor water injection.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention has a circulation path composed of a forward pipe and a return pipe for circulating hot water, and the forward pipe starts at a tank storing hot water and ends at It is connected to the heating terminal, has a pump for circulating hot water in the outflow pipe, a heat exchanger for heating the hot water, and a heat medium supply valve capable of supplying hot water to the heating terminal by opening the return pipe. The pipe has a starting end to the heating terminal, the end is connected to the tank, the return pipe is equipped with a heating means such as a heater for heating hot water, and a temperature sensor for detecting the temperature of the hot water heated by the heating means. In a hot water heating system equipped with a water supply means for supplying hot water into the tank, the water supply means is opened with the heat medium supply valve closed and the hot water heating system is filled with water, and the temperature after the constant temperature rise by the heating means is reached. Sensor Stored in the hot medium supply valve, the pump is turned on, the pump is turned on, the pump is turned on, the detected value of the temperature sensor after a certain period of time has passed, and the stored value of the detected temperature sensor causes the water filling in the hot water heater. The first feature is that a determination means for determining whether or not the process is completed is provided.

Further, a circulation path composed of a first outflow pipe and a first return pipe for circulating hot water, and the first outflow pipe originates from a tank for storing hot water and has an end connected to a first heating terminal, The first outflow pipe is provided with a pump for circulating hot water, a heat exchanger for heating the hot water, and a first heat medium supply valve capable of supplying the hot water to the first heating terminal by opening the first heat medium supply valve. The return pipe has a starting end at the first heating terminal and an end connected to the tank. The first return pipe has a heating means such as a heater for heating hot water, and a temperature sensor for detecting the temperature of the hot water heated by the heating means. And the water supply means for supplying hot water into the tank is provided in the tank, the starting end of the second forward pipe is emitted from the upstream side of the heat exchanger in the first forward pipe, and the end of the second forward pipe is the second heating terminal. Connected to the machine and opened to the second forward pipe 2 The heating terminal is provided with a second heat medium supply valve capable of supplying hot water, the second heating terminal emits the start end of the second return pipe, and the end of the second return pipe is hot water connected to the first return pipe. In the heating device, the heat medium supply valve is closed and the water supply means is opened to fill the hot water heating device with water, and the detected value of the temperature sensor after a constant temperature rise by the heating means is stored, and the heat medium supply valve is opened to pump. Is turned on, the pump is turned on, and a determination means is provided for determining whether or not the water filling in the hot water heating device is finished based on the detected value of the temperature sensor after a lapse of a certain time and the stored detected value of the temperature sensor. It has a second feature.

[0008]

In the present invention, the return pipe is provided with a heating means such as a heater and a temperature sensor for detecting the temperature of hot water heated by the heating means, and the detected value of the temperature sensor after a constant temperature rise by the heating means is stored. Then, the heat medium supply valve is opened, the pump is turned on, and the pump is turned on to determine whether or not the water filling in the hot water heating device is completed based on the detected value of the temperature sensor after the elapse of a predetermined time and the stored detected value of the temperature sensor. Since it is determined whether or not the water filling failure in the hot water heating device due to a failure of the heat medium supply valve or the like can be reliably detected.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the construction of a hot water heating apparatus according to the present invention. Reference numeral 1 denotes a hot water heating device, which is provided with a forward pipe 2 and a return pipe 3 for circulating heating circulating hot water.
The return pipe 2 starts from a tank 4 that stores hot water, and uses a return temperature sensor 5 that detects the return hot water temperature, a pump 6 that circulates the hot water, a heat exchanger 7 that heats the hot water, and a heat exchanger 7. A high temperature sensor 8 for detecting the temperature of heated hot water and a heat medium supply valve 9 capable of supplying hot water to the heating terminal device 10 by opening the heat sensor 8 are arranged in the outflow pipe 2, and the end of the outflow pipe 2 is provided. Is connected to the heating terminal 10.

The heating terminal 10 is composed of a radiator composed of a thin tube such as a panel heater, the start end of the return pipe 3 is connected, and the end of the return pipe 3 is a tank 4.
It is connected to the.

The return pipe 3 is provided with a heating means 11 such as a heater,
The temperature sensor 12 heated by the heating means 11 is arranged.

In the tank 4, a water supply means 13 for supplying city water into the tank 4, a low water level detection means 14 for detecting a predetermined low water level or higher in the tank 4, and a predetermined intermediate water level higher than the low water level. It is provided with a medium water level detecting means 15 for detecting a water level or higher, a high water level detecting means 16 for detecting a predetermined high water level or higher higher than the medium water level, and an overflow port 17 for discharging hot water out of the tank 4. .

The heat exchanger 7 is heated by the burner 18, and the gas amount to the burner 18 is obtained by opening the on-off valve 19 and varying the opening of the proportional valve 20. Reference numeral 21 is a bypass passage that starts at the downstream side of the heat exchanger 7 in the outflow pipe 2.
The end of is connected to the downstream side by the heating means 11 and the temperature sensor in the return pipe 3. Reference numeral 22 denotes a controller for controlling the controlled device such as the proportional valve described above. The controller 22 has a timer 23 having a clock function, a storage unit 24 for storing the detected temperature value, and the like. The judgment means 25 for judging is provided.

Reference numeral 26 is a remote controller connected to the controller 22, which can be filled with water by turning on the trial run switch 27. Reference numeral 28 denotes a display unit that displays the operating status of the hot water heating device 1, a failure location, and the like.

FIG. 2 is a sequence diagram showing the contents of control of the present invention. Turn on the trial run switch 27 (S
1), the water supply means 13 is opened (S2), and the temperature sensor 1
The warm water temperature TH1 detected by 2 is stored in the storage unit 24 (S3).

Next, the heating means 11 is turned on (S4), and it is judged whether or not the time t after turning on the heating means 11 has exceeded a certain time to (S5), and the hot water detected by the temperature sensor 12 is detected. It is determined whether or not the temperature T has reached a certain temperature (TH1 + a) or higher (S6). If the predetermined temperature a does not rise within the predetermined time to, it is considered that the heating means 11 is defective, the heating means 11 is turned off, the water supply means 13 is closed, and the display section 28 displays the heating means 11 defect. The operation is performed (S13).

Here, the fixed time to is a necessary and sufficient time required for raising the warm water by the heating means 11 to a predetermined temperature a. When the heating means 11 detects an increase in the predetermined temperature a, the hot water temperature (TH1 + a) at that time is stored in the storage unit 24.
(S7).

Next, the heat medium supply valve 9 is opened (S8),
Hot water is circulated in the heating terminal 10 and the pump 6 is turned on (S9). In step 10, it is determined whether or not the time t after turning on the pump 6 has passed a certain time t1, and in step 11, whether or not the temperature T detected by the temperature sensor 12 is less than the stored temperature (TH1 + a). To judge.

The storage temperature (TH1 +
If it is not less than a), the heat medium supply valve 9 is closed due to a failure, and hot water is circulated in the shaded route in FIG.
Moreover, it is considered that the hot water is being heated by the heating means 11, the failure state is displayed on the display unit 28, and the pump 6 is turned off.
The safety operation is performed by setting F, turning off the heating means 11 and closing the water supply means 13 (S14).

The storage temperature (TH1 +
If it is less than a), it is considered that the heat medium supply valve 9 is normally opened, and the hot water whose heat is radiated by the heating terminal 10 is normally circulated, and the thin tube and the circulation path in the heating terminal 10 are considered. Assuming that the inside was filled with water reliably, pump 6
FF, the heating means 11 is turned off, the water supply means 13 is closed, and the water injection operation is completed (S12). The determination temperature in step 11 may be determined based on whether or not the temperature is lower than the temperature (TH1 + a-d) taking into consideration the heat radiation effect of the heating terminal 10.

FIG. 3 shows another embodiment of the configuration of the hot water heating apparatus in FIG. 1, and the numbers 1 to 28 in the figure are common to those in FIG. On the upstream side of the heat exchanger 7 in the first outflow pipe 2, the starting end of the second outflow pipe 29 is emitted, and the second heat medium supply valve 30 is arranged in the second outflow pipe.
The end of 9 is connected to the second heating terminal 31. Second
The starting end of the second return pipe 32 is connected to the heating terminal 31,
The end of the second return pipe 30 is connected to the heating means 11 and the temperature sensor 12 upstream of the first return pipe 3.

The hot water heating apparatus shown in FIG. 3 can also be controlled by the sequence shown in FIG.

[0023]

According to the present invention, the return pipe is provided with a heating means such as a heater and a temperature sensor for detecting the temperature of hot water heated by the heating means, and the detected value of the temperature sensor after the temperature rises by the heating means is kept constant. After storing, the heat medium supply valve is opened, the pump is turned on, the pump is turned on, and the detected value of the temperature sensor after a certain period of time has passed is compared with the stored detected value of the temperature sensor to check whether the water filling in the hot water heating device is high. Since it is determined whether or not it has been completed, it is possible to reliably detect where the water filling failure in the hot water heating device due to a failure of the heat medium supply valve or the like occurs anywhere in the pipe.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a hot water heating apparatus of the present invention.

FIG. 2 is a sequence diagram showing the contents of control of the present invention.

FIG. 3 is a diagram showing a configuration of a hot water heating apparatus of the present invention.

[Explanation of symbols]

 2 Forward pipe (first forward pipe) 3 Return pipe (first return pipe) 4 Tank 6 Pump 7 Heat exchanger 9 Heat medium supply valve (first heat medium supply valve) 10 Heating terminal (first heating terminal) 11 Heating Means 12 Temperature Sensor 13 Water Supply Means 24 Storage Unit 25 Judging Means 29 Second Outgoing Pipe 30 Second Heat Medium Supply Valve 31 Second Heating Terminal 32 Second Return Pipe

Claims (2)

[Claims] 1. A circulation path composed of an outflow pipe and a return pipe for circulating hot water, and the outflow pipe originates from a tank storing hot water, the end is connected to a heating terminal, and the hot water is circulated in the outflow pipe. It is equipped with a pump, a heat exchanger that heats hot water, and a heat medium supply valve that can be opened to supply hot water to the heating terminal.The return pipe starts at the heating terminal and ends at the tank. The return pipe is provided with heating means such as a heater for heating hot water, a temperature sensor for detecting the temperature of hot water heated by the heating means, and the tank is provided with water supply means for supplying hot water into the tank. In the hot water heating system, the heat medium supply valve is closed and the water supply means is opened to fill the hot water heating system with water, and the detected value of the temperature sensor after a constant temperature rise by the heating means is stored and the heat medium supply valve is opened. Pump It is characterized in that a determination means is provided for determining whether or not the water filling in the hot water heating device is completed by turning on the pump and turning on the pump, and the detected value of the temperature sensor after a lapse of a certain time and the stored detected value of the temperature sensor. And hot water heating system. 2. A circulation path composed of a first outflow pipe and a first return pipe for circulating hot water, and the first outflow pipe originates from a tank storing hot water and has an end connected to a first heating terminal.
The first outflow pipe is provided with a pump for circulating hot water, a heat exchanger for heating the hot water, and a first heat medium supply valve capable of supplying the hot water to the first heating terminal by opening the first heat medium supply valve. The return pipe has a starting end at the first heating terminal and an end connected to the tank. The first return pipe has a heating means such as a heater for heating hot water, and a temperature sensor for detecting the temperature of the hot water heated by the heating means. And the water supply means for supplying hot water into the tank is provided in the tank, the starting end of the second forward pipe is emitted from the upstream side of the heat exchanger in the first forward pipe, and the end of the second forward pipe is the second heating terminal. The second heating terminal, which is connected to the second heating terminal and is capable of supplying hot water to the second heating terminal, by being opened.
In the hot water heating device including the heat medium supply valve, the second heating terminal emits the start end of the second return pipe, and the end of the second return pipe is connected to the first return pipe. The water supply means is opened to fill the hot water heater with water, and the detected value of the temperature sensor after the temperature rise by the heating means is stored,
Open the heat medium supply valve, turn on the pump, and turn on the pump.
A hot water heating system characterized in that a determination means for determining whether or not the water filling in the hot water heating apparatus has ended is provided based on the detected value of the temperature sensor after a certain period of time as N and the detected value of the stored temperature sensor. .